Dumas, Jacques Keywords: Criminal offences | State responsibility | Mots clefs: Délits | Responsabilité des Etats | ABSTRACT Jacques Dumas begins his course by explaining why the territorial laws are insufficient to ensure the repression of the offenses committed against foreigners. He then asks whether and under what conditions the State of the place of the offense is liable to the State of the victim’s nationality. The author focuses on the possible causes of irresponsibility, on the rules to follow to implemen…